The STS-120 crew members completed the day's scheduled inspections of Space Shuttle Discovery’s heat shield before noon EDT. They used Discovery’s robotic arm and an attached boom extension to check the ...

Mission managers announced today that the fourth spacewalk of STS-120 is targeted for Friday. This spacewalk was originally scheduled for Thursday and would have involved work on the starboard Solar Alpha ...

Several days after Rosetta's close flyby of comet 67P/Churyumov-Gerasimenko on 14 February 2015, images taken on this day by OSIRIS, the scientific imaging system on board, have now been downlinked to Earth. ...

Like coins, most comet have both heads and tails. Occasionally, during a close passage of the Sun, a comet's head will be greatly diminished yet still retain a classic cometary outline. Rarely are we left ...

This week marked the completion of an important step on the path to spacecraft assembly, test, and launch operations for the Origins Spectral Interpretation Resource Identification Security Regolith Explorer ...

NASA's Dawn spacecraft has returned new images captured on approach to its historic orbit insertion at the dwarf planet Ceres. Dawn will be the first mission to successfully visit a dwarf planet when it enters ...

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